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..i <br /> Petroleum contaminated soil was fed into the system via a loader. The soil emptied from the bottom of the <br /> hopper onto a conveyer system that passed across a weighing system and into the rotary kiln where the soil <br /> was heated to approximately 800 degrees Fahrenheit destroying or volatilizing the hydrocarbons in the soil. <br /> The volatilized hydrocarbons,now in the counterflow gas stream,were treated in a thermal oxidizer at 1,400 <br /> degrees Fahrenheit. The soil that exited the rotary kiln was reentrained with moisture and stockpiled for <br /> confirmation sampling. A description of TPS' thermal treatment unit is provided in Appendix C. <br /> 3.4 CONFIRMATION SAMPLING AND ANALYSIS <br /> Following the completion of the thermal treatment program,TPS collected a representative soil sample from <br /> the treated soil and delivered the sample to Weck Laboratories,Inc.of Industry,California for confirmatory <br /> independent laboratory analysis. The objective of the confirmation sampling and analysis program was to <br /> demonstrate that the thermal treatment process successfully destroyed the concentrations of petroleum <br /> hydrocarbons in the treated soil. The confirmation soil sample was analyzed for TPH using EPA Method <br /> 8015 Modified, and for BTEX and MTBE using EPA Method 8020 . The laboratory report is presented in <br /> Appendix D. A summary of the results are presented in Table 3. <br /> Table 3 <br /> Laboratory Results of the Confirmation Soil Sample <br /> Sample TPH Benzene Toluene EthylBenzene Total Xylenes MTBE <br /> ID (Ppb) (ppb) (Ppb) (ppb) (ppb) (ppb) <br /> OAK970305CRND#2 ND ND ND ND ND ND <br /> OAK970305CRND#4 ND ND ND ND ND ND <br /> OAK970305CRND#6 ND ND ND ND ND ND <br /> OAK970305CRND#8 ND ND ND ND ND ND <br /> OAK970305CRND#10 ND ND ND ND ND ND <br /> Reporting Limit 5 10 25 25 25 25 <br /> Note: TPH -Total petroleum Hydrocarbons using EPA Method 8015 Modified <br /> MTBE -Methyl tert-Butyl Ether using EPA Method 8020 <br /> ppb -parts per billion <br /> ND -not detected above laboratory method practical quantifiable limits <br /> The laboratory results indicated that the representative soil sample from the treated soil did not contain <br /> detectable petroleum hydrocarbon concentrations. The thermal soil treatment portion of the program was <br /> complete. <br /> L.. 7 <br />